Snackbar shown again on popBackstack()

[kosavsech]

architecture-samples/app/src/main/java/com/example/android/architecture/blueprints/todoapp/tasks/TasksScreen.kt

Lines 121 to 128 in 03d9af0

	// Check if there's a userMessage to show to the user
	val currentOnUserMessageDisplayed by rememberUpdatedState(onUserMessageDisplayed)
	LaunchedEffect(userMessage) {
	if (userMessage != 0) {
	viewModel.showEditResultMessage(userMessage)
	currentOnUserMessageDisplayed()
	}
	}

This part of code being legitimately trigger by

architecture-samples/app/src/main/java/com/example/android/architecture/blueprints/todoapp/TodoNavGraph.kt

Lines 96 to 100 in 03d9af0

	onTaskUpdate = {
	navActions.navigateToTasks(
	if (taskId == null) ADD_EDIT_RESULT_OK else EDIT_RESULT_OK
	)
	},

or

architecture-samples/app/src/main/java/com/example/android/architecture/blueprints/todoapp/TodoNavGraph.kt

Line 110 in 03d9af0

onDeleteTask = { navActions.navigateToTasks(DELETE_RESULT_OK) }

But after you can go to task details again and click go back arrow in top bar.

architecture-samples/app/src/main/java/com/example/android/architecture/blueprints/todoapp/taskdetail/TaskDetailScreen.kt

Lines 66 to 68 in 03d9af0

	topBar = {
	TaskDetailTopAppBar(onBack = onBack, onDelete = viewModel::deleteTask)
	},

Last snackbar message will be shown again. But this time, in my opinion, because there is copy of route with USER_MESSAGE_ARG in backstack.

How this can be fixed or bypassed?

[Nau56]

override fun onDestroyView() {
super.onDestroyView()
// Dismiss the Snackbar if it's currently shown
snackbar?.dismiss()
}